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I am not trying to highjack your thread here, but I noticed you have two other recent posts requesting info on Vortex Optics, so I assume you are wanting to mount a Vortex scope. Anyways, I have my Vortex Viper 6.5-20X50 BDC mounted in Vortex Tactical rings and they are working great for me. I had a look at the Burris web site and the Burris and Vortex rings look like they come from the same manufacturer, so you should be able to source the Vortex rings from where ever you buy your scope.
If I have stuck my nose in where it doesn't belong just give it a slap and tell me to buzz off!
Again, sorry to intrude, but my rings are the low height and I have a 6.5-20X50 mounted in it on a 20 MOA base on a Savage action with a heavy barrel profile and it works great. Just letting you know.